KR20150009240A - Wood polymer/plastic composite having a wood pattern and manufacturing method thereof - Google Patents

Wood polymer/plastic composite having a wood pattern and manufacturing method thereof Download PDF

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Publication number
KR20150009240A
KR20150009240A KR1020130083437A KR20130083437A KR20150009240A KR 20150009240 A KR20150009240 A KR 20150009240A KR 1020130083437 A KR1020130083437 A KR 1020130083437A KR 20130083437 A KR20130083437 A KR 20130083437A KR 20150009240 A KR20150009240 A KR 20150009240A
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KR
South Korea
Prior art keywords
weight
mixture
melting point
inner layer
base
Prior art date
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KR1020130083437A
Other languages
Korean (ko)
Inventor
박종성
Original Assignee
(주)엘지하우시스
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Priority to KR1020130083437A priority Critical patent/KR20150009240A/en
Publication of KR20150009240A publication Critical patent/KR20150009240A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0227—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer
    • B27N1/0236—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with the stirrers rotating about an horizontal axis, e.g. in consecutive casings
    • B27N1/0245—Mixing the material with binding agent using rotating stirrers, e.g. the agent being fed through the shaft of the stirrer with the stirrers rotating about an horizontal axis, e.g. in consecutive casings with a single stirrer shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/007—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and at least partly composed of recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/06—Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/12—Moulding of mats from fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/16—Transporting the material from mat moulding stations to presses; Apparatus specially adapted for transporting the material or component parts therefor, e.g. cauls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • B27N3/183—Forming the mat-edges, e.g. by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/28—Moulding or pressing characterised by using extrusion presses
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse

Abstract

TECHNICAL FIELD The present invention relates to a synthetic wood which can form a natural wood pattern on a synthetic wood surface and can be improved in scratch resistance and stain resistance, and a method of manufacturing the synthetic wood.
In order to achieve this, the present invention comprises an inner layer 10 extruded through a main extruder 110; And a surface layer 20 extruded on the outer circumferential surface of the inner layer 10 through the auxiliary extruder 120 and the extrusion die 130. The surface layer 20 is formed on the outer periphery of the inner layer 10, A neck pattern (21) formed on a surface by a color chip having a melting point higher than that of the base compound, the base pattern being included in a mixture for molding the base (21) (23).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a synthetic wood having wood pattern and a manufacturing method thereof,

The present invention relates to a synthetic wood, and more particularly, to a synthetic wood which can smoothly form a natural wood pattern on the surface of synthetic wood and a method for producing the same.

Recently, there have been many researches on synthetic wood (Wood polymer / plastic composite) having surface texture and pattern similar to natural wood. Synthetic wood is produced by extrusion or extrusion as a material that has similar appearance and properties to natural wood because it contains a large amount of wood.

As the plastic raw materials used for injection or extrusion molding, polyolefins such as polyethylene (PE) and polypropylene (PP) are mainly used. This is because polyolefins are suitable for synthetic wood which is eco-friendly because it is not toxic. Injection molded products can show the texture of the wood without being subjected to secondary processing such as printing or painting, as pieces or grain patterns are formed on the surface during molding.

In addition, synthetic wood is less absorbent than natural wood and does not decay. In addition, it has a relatively low foaming magnification and a high density of surface layer on the surface, which is high in strength and can be processed such as nailing and planing.

These synthetic woods are strong and have good physical properties and are environmentally friendly. In addition, the market is rapidly growing as a new material replacing wood that can be recycled, and various types of synthetic wood products are being developed accordingly.

Such a synthetic wood has been conventionally filed with the Japanese Patent Registration No. 10-1067669. Conventional synthetic wood is formed by forming a plurality of coating layers having different colors through extrusion and then forming a pattern on the surface of the synthetic wood through mechanical post processing using a forming roller arranged at a constant interval on the conveyor. .

However, most of the conventional synthetic woods are made of forged and repetitive patterned extruded products, which can not realize the shape of a tree like a wave, a solid line, and a dashed dotted line appearing on a real high grade neck.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a synthetic wood which can form a natural wood pattern on the synthetic wood surface, The purpose is to provide.

The synthetic wood of the present invention for achieving the above object comprises an inner layer extruded through a main extruder; And a surface layer extruded on an outer circumferential surface of the inner layer through a secondary extruder and an extrusion die, wherein the surface layer is formed on an outer circumferential edge of the inner layer, and a mixture for forming the base, And a neck pattern formed on the surface by a color chip having a melting point higher than that of a base compound.

In this case, the inner layer is composed of a mixture containing 10 to 90 parts by weight of wood powder and 10 to 50 parts by weight of a polymer resin.

The base molding mixture may further contain 26 to 36% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 캜, 22 to 29% by weight of wood powder, 5 to 7% by weight of an additive, 21 to 31% By weight to 13% by weight.

The color chip comprises 21 to 37% by weight of a high melting point polymer resin having a melting point within a range of 150 to 180 DEG C, 1 to 13% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 DEG C, 2 to 5% by weight of an additive, 10 to 23% by weight of an inorganic substance, and 1 to 25% by weight of a pigment.

The low-melting-point polymer resin is characterized by comprising polyethylene (PE).

The high melting point polymer resin is characterized by comprising polypropylene (PP).

Further, the color chip is characterized in that the melt flow index (MI) is higher than that of the base molding mixture.

The auxiliary extruder is used to melt-extrude the base molding mixture, the color chips are extruded in an unmelted state, the unmelted color chips are melted in the extrusion die to form a neck pattern on the surface of the surface layer .

A method of making synthetic wood, comprising: extruding the mixture through a main extruder to form an inner layer; Extruding the mixture containing the color chips through a secondary extruder, while extruding the colored chips having a melting point higher than that of the mixture to be melted and extruded in an unmelted state; Passing an inner layer extruded through the main extruder in an extrusion hole of an extrusion die; And injecting a mixture supplied through the auxiliary extruder into the extrusion die, heating and melting the color chip contained in the mixture, and forming a surface layer on the outer peripheral surface of the inner layer passing through the extrusion hole, The method of claim 1,

In this case, the surface layer includes a base formed to have a predetermined thickness on the outer periphery of the inner layer, and a neck pattern formed on the surface of the base by the color chip.

The mixture for molding the base preferably comprises 26 to 36% by weight of a low-melting-point polymer resin having a melting point within a range of 100 to 140 占 폚 as measured by differential scanning calorimetry (DSC), 22 to 29% by weight of wood powder, 5 to 7% , 21 to 31 wt% of an inorganic substance, and 7 to 13 wt% of a pigment.

Also, the color chip has 21 to 37% by weight of a high-melting-point polymer resin having a melting point within a range of 150 to 180 ° C as measured by differential scanning calorimetry (DSC), a low melting point polymer resin 1 having a melting point within 100 to 140 ° C To 13% by weight of wood powder, 25 to 41% by weight of wood powder, 2 to 5% by weight of an additive, 10 to 23% by weight of an inorganic pigment and 1 to 25% by weight of a pigment.

The low-melting-point polymer resin is characterized by comprising polyethylene (PE).

The high melting point polymer resin is characterized by comprising polypropylene (PP).

Further, the flow path of the extrusion die is formed in a vertically asymmetric manner with respect to the vertical central portion of the extrusion hole, so that the flow rate of the mixture is lowered as the distance from the injection port is decreased, Is embodied to include a pattern extending from a crown to a stripe.

The extrusion die may further include a cooling part to adjust the inner temperature to change the neck pattern of the surface layer.

According to the present invention, it is possible to form a natural wood pattern on the synthetic wood surface, and to improve scratch resistance and stain resistance.

1 is a partially cutaway perspective view of a synthetic wood in which a neck pattern is realized according to the present invention,
FIG. 2 is a cross-sectional view and a partial detail view showing the internal structure of a synthetic wood in which a wood pattern is realized according to the present invention,
3 is a schematic view showing an apparatus for manufacturing a synthetic wood according to the present invention,
4 is a view showing a flow path of an extrusion die according to the present invention,
5 is a side sectional view showing a state in which a surface layer is formed using an extrusion die according to the present invention,
6 is a view showing a neck pattern according to the position of an injection port of an extrusion die according to the present invention,
FIG. 7 is a photograph showing an actual product of a synthetic wood material having a neck pattern according to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, the same reference numerals as in the drawings denote the same elements in the drawings, unless they are indicated on other drawings.

FIG. 1 is a partially cutaway perspective view of a synthetic wood having a wood pattern according to the present invention, and FIG. 2 is a cross-sectional view and a partial detail view showing an internal structure of a synthetic wood having a wood pattern according to the present invention.

1 and 2, a synthetic wood 1 according to a preferred embodiment of the present invention includes an inner layer 10, an outer layer 10 formed by extrusion molding on the outer surface of the inner layer 10, And a surface layer 20 on which a pattern is formed.

The configuration of the present invention will be described in detail as follows.

The inner layer 10 is extruded through the main extruder 110 and forms the main body of the synthetic wood 1. The inner layer 10 may optionally include wood powder, neck chips, long fibers, and the like. For example, the inner layer 10 may comprise 10 to 90 parts by weight of wood powder and 10 to 50 parts by weight of a polymer resin.

The surface layer 20 is formed on the outer circumferential surface of the inner layer 10 through the auxiliary extruder 120 and the extrusion die 130 to have a predetermined thickness. The surface layer 20 includes a base 21 molded on an outer peripheral surface of the inner layer 10 and a surface layer 20 formed on a surface of the base 21 by a color chip having a melting point higher than that of the mixture, And a neck pattern 23, which is embodied in various colors in different colors.

In this case, the auxiliary extruder 120 is extruded while melt-extruding the base molding mixture, while the color chip is unmelted. The unmelted color chip is heated and melted in the extrusion die 130 to realize variously shaped wood pattern 23 on the surface of the base 21.

That is, when the base molding mixture and the color chip have different melting temperatures, the degree of spread of the mixture can be controlled. In other words, the base molding mixture having a relatively low melting temperature is melted first, so that it is dispersed more widely to form the base 21. The color chip having a relatively high melting temperature is relatively less dispersed as it is melted later. By using these physical characteristics, the degree of dispersion of the color chip made of various colors can be controlled to realize various wood pattern 23.

Preferably, the base compound comprises 26 to 36% by weight of a low-melting-point polymer resin having a melting point within a range of 100 to 140 ° C (as measured by differential scanning calorimetry (DSC)), 5 to 7% by weight of an additive, 21 to 31% by weight of an inorganic substance, and 7 to 13% by weight of a pigment.

The color chip includes 21 to 37% by weight of a high melting point polymer resin having a melting point within a range of 150 to 180 ° C, 1 to 13% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 ° C, 25 to 41% by weight of an additive, 2 to 5% by weight of an additive, 10 to 23% by weight of an inorganic substance, and 1 to 25% by weight of a pigment. These color chips have a higher melt flow index (MI) compared to the base molding mixture.

In this case, the low melting point polymer resin may include polyethylene (PE). The high melting point polymer resin may also include polypropylene (PP) having a melting point higher than that of polyethylene (PE).

Example

Figure pat00001

FIG. 3 is a schematic view showing an apparatus for manufacturing a synthetic wood according to the present invention, FIG. 4 is a view showing a flow path of an extrusion die according to the present invention, FIG. 5 is a view showing a state in which a surface layer is formed using an extrusion die according to the present invention Fig.

3, the apparatus 100 for manufacturing a synthetic wood according to the present invention includes a main extruder 110, a secondary extruder 120, and an extrusion die 130.

First, the main extruder 110 serves to form an inner layer 10 of synthetic wood. Preferably, the main extruder 110 includes a heating cylinder 113 for dissolving the raw material introduced through the hopper 111 by heating the heater, and an extruder for extruding the raw material dissolved in the heating cylinder 113 And an extrusion screw (not shown).

The auxiliary extruder 120 serves to supply the extrudate so as to form a surface layer 20 having a predetermined thickness on the outer periphery of the inner layer 10 extruded through the main extruder 110. The auxiliary extruder 120 preferably includes a heating cylinder 123 for dissolving the raw material introduced through the hopper 121 by heating the heater, and a heater 123 for extruding the raw material dissolved in the heating cylinder 123 And an extrusion screw (not shown).

4 and 5, the extrusion die 130 is supplied with a mixture containing color chips of different colors from the auxiliary extruder 120 and is extruded through the main extruder 110, A base 21 having a predetermined thickness is formed on the outer periphery of the inner layer 10 passing through the base 21 and a neck pattern 23 of various colors and patterns are formed on the base 21.

Preferably, the extrusion die 130 includes a mold frame 131 through which a square extrusion hole 133 is passed to allow the inner layer 10 to be extruded through the main extruder 110 to pass therethrough, And a flow path 135 for injecting the mixture supplied through the auxiliary extruder 120, the flow path 135 being formed as a vertically asymmetric shape in the inner tube 131. More specifically, the flow path 135 includes an injection port 135a formed with a vertical asymmetry (A) with respect to the vertical center of the extrusion hole 133.

As shown in FIGS. 6 and 7, the farther the introduced mixture is from the injection port 135a, the lower the flow rate. Thus, it is possible to realize various wood pattern 23 including a pattern extending from the crown on the base 21 to the oblique line.

In other words, the molten mixture introduced through the flow path 135 of the extrusion die 130 can be extruded so as to have a parabolic flow with a lower flow rate as the distance from the injection port 135a is increased. Or may be extruded to have a plug flow having a generally constant flow rate, or may have a flow of two types mixed.

Meanwhile, the extrusion die 130 may further include a cooling unit (not shown) for controlling the temperature inside. Accordingly, by adjusting the temperature of the extrusion die 130 through the cooling part, the degree of spreading of the molten mixture and the degree of mixing with the color chips can be controlled, and thus the neck pattern 23 can be changed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

1: synthetic wood 10: inner layer
20: outer layer 21: base
23: Wood pattern 100: Synthetic wood manufacturing equipment
110: main extruder 120: auxiliary extruder
130: extrusion die 133: extrusion hole
135: Euro 135a: Inlet port

Claims (16)

An inner layer 10 extruded through a main extruder 110; And
And a surface layer (20) extruded on an outer circumferential surface of the inner layer (10) through a secondary extruder (120) and an extrusion die (130)
The surface layer (20)
A base 21 molded at the outer periphery of the inner layer 10;
And a neck pattern 23 which is included in the mixture for molding the base 21 and is realized on the surface by a color chip having a melting point higher than that of the base compound Lt; / RTI >
The method according to claim 1,
The inner layer (10)
10 to 90 parts by weight of wood powder, and 10 to 50 parts by weight of a polymer resin.
The method according to claim 1,
The composition of the base molding mixture may contain,
26 to 36% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 占 폚, 22 to 29% by weight of wood powder, 5 to 7% by weight of an additive, 21 to 31% by weight of an inorganic pigment and 7 to 13% Lt; / RTI >
The method according to claim 1,
The composition of the color chip may include,
21 to 37% by weight of a high-melting-point polymer resin having a melting point within a range of 150 to 180 ° C, 1 to 13% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 ° C, 25 to 41% by weight of wood powder, 10 to 23% by weight of an inorganic material, and 1 to 25% by weight of a pigment.
The method according to claim 3 or 4,
The low-melting-
Characterized in that it comprises polyethylene (PE).
5. The method of claim 4,
The high-melting-
Characterized in that it comprises polypropylene (PP).
The method according to claim 1,
The color chip may include:
And a melt flow index (MI) higher than that of the base molding mixture.
The method according to claim 1,
The auxiliary extruder 120 is formed by melt-extruding the base molding mixture, the color chip being extruded in an unmelted state,
Wherein the unmelted color chip is melted in the extrusion die (130) to provide a wood pattern on the surface of the surface layer (20).
Extruding the mixture through the main extruder 110 to form an inner layer 10;
Extruding the mixture containing the color chips through the auxiliary extruder 120 while extruding the colored chips having a higher melting point than the mixture to be melted and extruded in an unmelted state;
Passing the inner layer (10) extruded through the main extruder (110) into the extrusion hole (133) of the extrusion die (130); And
The mixture supplied through the auxiliary extruder 120 is injected into the extrusion die 130 and the color chip contained in the mixture is heated and melted to form an inner layer 10. A method of manufacturing a synthetic wood comprising the steps of: forming a surface layer (20) having a neck pattern on an outer peripheral surface of a synthetic wood material (10).
10. The method of claim 9,
The surface layer (20)
A base 21 molded to a predetermined thickness on the outer periphery of the inner layer 10;
And a neck pattern 23 formed on the surface of the base 21 by the color chip.
11. The method of claim 10,
The composition of the mixture for molding the base (21)
26 to 36% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 占 폚 as measured by differential scanning calorimetry (DSC), 22 to 29% by weight of wood powder, 5 to 7% by weight of an additive, And 7 to 13% by weight of a pigment.
11. The method of claim 10,
The composition of the color chip may include,
21 to 37% by weight of a high-melting-point polymer resin having a melting point within a range of 150 to 180 ° C as measured by differential scanning calorimetry (DSC), 1 to 13% by weight of a low melting point polymer resin having a melting point within a range of 100 to 140 ° C, 25 to 41% by weight of an additive, 2 to 5% by weight of an additive, 10 to 23% by weight of an inorganic substance, and 1 to 25% by weight of a pigment.
13. The method according to claim 11 or 12,
The low-melting-
Characterized in that it comprises polyethylene (PE).
13. The method of claim 12,
The high-melting-
Characterized in that it comprises polypropylene (PP).
10. The method of claim 9,
The flow path 135 of the extrusion die 130,
The inlet 135a for introducing the mixture to be supplied is formed vertically asymmetrically with respect to the vertical center of the extrusion hole 133 and the flow rate of the mixture is decreased as the inlet mixture is moved away from the inlet 135a,
Wherein the neck pattern is embodied in a pattern extending from a crown to a stripe.
10. The method of claim 9,
The extrusion die (130)
Further comprising a cooler for adjusting a temperature of the inside of the surface layer (20) so as to change the neck pattern (23) of the surface layer (20).
KR1020130083437A 2013-07-16 2013-07-16 Wood polymer/plastic composite having a wood pattern and manufacturing method thereof KR20150009240A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190052836A (en) * 2017-11-09 2019-05-17 (주)엘지하우시스 Wood plastic composite using PMMA chips
KR102439701B1 (en) * 2021-08-19 2022-09-02 동양기업(주) Color composite wood handrail manufacturing apparatus and method for manufacturing color composite wood handrail material using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190052836A (en) * 2017-11-09 2019-05-17 (주)엘지하우시스 Wood plastic composite using PMMA chips
KR102439701B1 (en) * 2021-08-19 2022-09-02 동양기업(주) Color composite wood handrail manufacturing apparatus and method for manufacturing color composite wood handrail material using the same

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